Development of the evaluation method for the aerosol particle deposition amounts in the containment vessel and the reactor building, 4; Study on the aerosol particle deposition amounts on the detailed structures in the reactor building

Horiguchi, Naoki   ; Miyahara, Naoya; Uesawa, Shinichiro  ; Yoshida, Hiroyuki  ; Osaka, Masahiko  

Development of a CFD-based analysis method of aerosol deposition amounts in a reactor building has been conducted to contribute to realistic source term evaluation. In order to establish one of the aerosol deposition models at specific structures in a reaction building, preliminary analysis of aerosol deposition amount when passing through a narrow flow channel, namely a door, was conducted. Results showed that aerosol deposition amount increased as the pressure difference between inlet and outlet and the particle diameter increased due to the increase of inertia force of the particles. These results can be important knowledge for the modelling.